direct sequence spread spectrum technique
Detection of direct sequence spread spectrum signals
... include direct sequence spread spectrum (DSSS) signaling, where codes are used to communicate secretly ...to spread the transmitted signal over a wide bandwidth, enabling communication ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... In this study, we investigated the effect of different combination of preprocessing techniques on the performance of the prediction models, in a stepwise manner. In the first step, detected missing values are replaced ...
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FHSS, DSSS, And Hybrid DS/FH Performance Evaluation For VSAT
... system. Direct Sequence Spread Spectrum (DSSS), Frequency Hopping Spread Spectrum (FHSS), and a hybrid approach of both techniques DS/FH are proposed to solve the ...a ...
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Using chaotic sequence in direct sequence spread spectrum based on code division multiple access (DS CDMA)
... even for very long sequences. In addition, an enormous number of different sequences can be generated simply by changing its initial condition. Chaotic sequences are deterministic, reproducible, uncorrelated and ...
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Effectiveness of Multimedia Learing on achievement in Biology
... the spread spectrum technique works on the principle to use the information to be hidden to stretch it across the frequency spectrum of audio signal as greater as ...This technique ...
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Comparative Simulation & Analysis of 2- PSK Spreading Transceiver
... therefore direct sequence spread spectrum (DSSS) is proposed in addition to binary phase shift keying (BPSK), which not only have anti-jamming capability, concealment and low SNR but also ...
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Mitigationof Security Risk in Satellite Communication by using Turbo coded DSSS
... this technique we can achieve only up to 10 -1 dB and SNR has gone beyond the ...that direct sequence spread spectrum is applied with binary phase shift keying as the result shows there ...
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Spread Spectrum Sensing Techniques for Transformer Frequency Response Data
... channels, spread spectrum is proposed in the literature [3]. Spread spectrum can be defined as a modulation technique in which pseudo-random sequence is used in expanding the ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... by the framework and build up a free session key with the system independently. Moreover, it takes aggregate signature in which a group pioneer of MTC gadgets and sends the aggregate signature to the Mobility Management ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... detection technique with a traffic based collection process and simple pattern ...detection technique are of utmost important to meet the IT projects’ mission ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Few research efforts have thus far been dedicated to address the problem of dynamic score level in fingerprint images on OSNs. In [16], a static software approach combining Speeded Up Robust Features (SURF) and Pyramid ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Fuzzy Logic Control (FLC) is another alternative controller used for the purpose of reduction the vibrations and controlling flexible link manipulators [17], and H-infinity control as well [18]. Also there are many ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Researchers have concentrated more on the applications of autonomous mobile robots. Nevertheless, obstacle avoidance for non autonomous mobile robot is particularly important. The more commonly employed technique ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... segmentation technique like Iterative Self Organizing Data (ISODATA) and Self-Organizing Map and Hybrid Dynamic Genetic Algorithm cooperation method (SOM-HGA) to carry out the image ...thresholding ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... Learning Disability is a disorder of neurological condition which causes deficiency in child’s brain activities such as reading, speaking and many other tasks. According to the World Health Organization (WHO), 15% of the ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... The speech technology in computer assisted language learning is also widely used in Malaysia (Kim et al, 2008). Methods are carried out to assess the teaching and learning principles and interface design guidelines in ...
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Implementation of Direct Sequence Spread Spectrum Communication System Using FPGA
... original sequence in case they are shuffled out of ...DSSS technique was basically using for four types of carrier signal there are, Sine wave, Inv-sine wave, Cos wave and Inv-cos ...
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COMPARISON OF JAMMING EXCISION METHODS FOR DIRECT SEQUENCE/SPREAD SPECTRUM (DS/SS) MODULATED SIGNAL
... The mispointing of antenna results in degradation of satellite link margin. The gain in the direction of undesired satellite increases which creates interference to that satellite downlink or uplink signal. This ...
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Modeling and Simulation of CDMA Codes in Scilab
... as Direct Sequence Code Division Multiple Access ...useful technique is presented, al- lowing to model and simulate Linear Feedback Shift Register (LFSR) for ...by spread spectrum ...
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Direct Sequence Spread Spectrum with Barker Code and QPSK
... - Spread Spectrum technique is a digital passband ...the Direct Sequence Spread ...of Direct Sequence Spread Spectrum, then, we simulate Direct ...
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